I will try in this section to answer on all questions referred to the English Grammar. First lesson is the Simple Present Tense.
SIMPLE PRESENT TENSE
Simple Present Tense has the same form as the infinitive but adds an S for the third person singular:
I work We work
You work You work
He/she/it works They work
Negative is formed with the negative of the verb do:
I do not work (don’t) We do not work
You do not work You do not work
He/she/it dos not work They do not work
Interrogative is formed as follows:
Do I work? Do we work?
Do you work? Do you work?
Does he/she/it work? Do they work?
Simple Present Tense is often used with adverbs: often, usually, never, always, occasionally, on Mondays, twice a year, every week